feat(matrix): add adapter baseline and platform-aware command hints

core/handlers/chat.py

@@ -4,9 +4,19 @@ from __future__ import annotations
 from core.protocol import IncomingCommand, OutgoingMessage
 
 
+def _command(platform: str, name: str) -> str:
+    prefix = "!" if platform == "matrix" else "/"
+    return f"{prefix}{name}"
+
+
 async def handle_new_chat(event: IncomingCommand, auth_mgr, platform, chat_mgr, settings_mgr) -> list:
     if not await auth_mgr.is_authenticated(event.user_id):
-        return [OutgoingMessage(chat_id=event.chat_id, text="Введите /start чтобы начать.")]
+        return [
+            OutgoingMessage(
+                chat_id=event.chat_id,
+                text=f"Введите {_command(event.platform, 'start')} чтобы начать.",
+            )
+        ]
     name = " ".join(event.args) if event.args else None
     ctx = await chat_mgr.get_or_create(
         user_id=event.user_id,
@@ -20,7 +30,12 @@ async def handle_new_chat(event: IncomingCommand, auth_mgr, platform, chat_mgr,
 
 async def handle_rename(event: IncomingCommand, auth_mgr, platform, chat_mgr, settings_mgr) -> list:
     if not event.args:
-        return [OutgoingMessage(chat_id=event.chat_id, text="Укажите название: /rename Название")]
+        return [
+            OutgoingMessage(
+                chat_id=event.chat_id,
+                text=f"Укажите название: {_command(event.platform, 'rename')} Название",
+            )
+        ]
     ctx = await chat_mgr.rename(event.chat_id, " ".join(event.args))
     return [OutgoingMessage(chat_id=event.chat_id, text=f"Переименован в: {ctx.display_name}")]
 

core/handlers/message.py

@@ -4,9 +4,18 @@ from __future__ import annotations
 from core.protocol import IncomingMessage, OutgoingMessage, OutgoingTyping
 
 
+def _start_command(platform: str) -> str:
+    return "!start" if platform == "matrix" else "/start"
+
+
 async def handle_message(event: IncomingMessage, auth_mgr, platform, chat_mgr, settings_mgr) -> list:
     if not await auth_mgr.is_authenticated(event.user_id):
-        return [OutgoingMessage(chat_id=event.chat_id, text="Введите /start чтобы начать.")]
+        return [
+            OutgoingMessage(
+                chat_id=event.chat_id,
+                text=f"Введите {_start_command(event.platform)} чтобы начать.",
+            )
+        ]
 
     # Voice slot fallback: audio attachment without registered voice_handler
     if event.attachments and event.attachments[0].type == "audio":